If we use the climate for the Minneapolis-Saint Paul International Airport (in Fort Snelling), we get an average high of 55 degrees Fahrenheit and an average low of 38 degrees Fahrenheit. Now for the months…
January: average high of 24 degrees Fahrenheit and average low of 9 degrees Fahrenheit
February: average high of 29 degrees Fahrenheit and average low of 13 degrees Fahrenheit
March: average high of 42 degrees Fahrenheit and average low of 25 degrees Fahrenheit
April: average high of 57 degrees Fahrenheit and average low of 38 degrees Fahrenheit
May: average high of 69 degrees Fahrenheit and average low of 50 degrees Fahrenheit
June: average high of 79 degrees Fahrenheit and average low of 60 degrees Fahrenheit
July: average high of 83 degrees Fahrenheit and average low of 65 degrees Fahrenheit
August: average high of 81 degrees Fahrenheit and average low of 63 degrees Fahrenheit
September: average high of 73 degrees Fahrenheit and average low of 54 degrees Fahrenheit
October: average high of 58 degrees Fahrenheit and average low of 41 degrees Fahrenheit
November: average high of 42 degrees Fahrenheit and average low of 28 degrees Fahrenheit
December: average high of 29 degrees Fahrenheit and average low of 15 degrees Fahrenheit